If your're concerned about CO2, nuclear power is the answer. It's the
only clean energy source big enough to meet demand.
To "Sensible Scientist" you forgot to mention that nuclear power is also
a green power source because its waste product can be recycled into new fuel and
generate more power. Also, one of the original founders of Greenpeace or the
Sierra Club (I can't remember which) fully endorses it.
Actually, I don't think my phone and computer take an
'astounding' amount of energy to keep working. It takes time to charge
things, but not necessarily a lot of energy. Modern electronic devices are
really efficient. True, there are a lot of 'em these days, but they're
such low power units it's amazing. I remember when offices had one big IBM
selectric typewriter and an incandescent desk lamp. Todays' office space
often has 15 or more gadgets plugged in at once for one person but uses less
power than the 'good old days'.